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dmitriipisarev

PROFILE

Dmitriipisarev

Worked on the Netcracker/qubership-integration-runtime-catalog and qubership-integration-engine repositories, focusing on backend reliability, data accuracy, and event-driven integration. Delivered features such as Quarkus JMS messaging components to enable seamless message production and consumption, and enhanced chain export workflows to include complete deployment metadata. Addressed complex filtering and aggregation issues by refining Java and Spring Data JPA query logic, improving filter accuracy and reducing edge-case failures. Performed targeted data model cleanup and optimized database queries for maintainability. Fixed checkpoint size calculations in Java to ensure accurate data reporting, demonstrating a methodical approach to backend development, database management, and code refactoring.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

6Total
Bugs
4
Commits
6
Features
2
Lines of code
336
Activity Months5

Your Network

23 people

Work History

January 2026

1 Commits

Jan 1, 2026

Month 2026-01 – Netcracker/qubership-integration-engine: Stability and data accuracy improvements. No new features delivered this month; main focus was a bug fix that improves data size calculations and downstream reliability. Impact: more accurate checkpoint sizing, reducing misreporting in downstream systems and partner integrations. Technologies/skills demonstrated: byte-level data handling, precise data parsing, and commit-based traceability.

December 2025

1 Commits • 1 Features

Dec 1, 2025

Month: 2025-12. Concise monthly summary for Netcracker/qubership-integration-runtime-catalog focused on business value and technical achievements. Delivered Quarkus JMS Messaging: JMS Sender and Trigger Components enabling producers and consumers for JMS queues and topics, aligning with our event-driven integration goals. Commit 179d2c15bc1903e963bd53fab8821c1261298cca ("feat: #242 Quarkus JMS component (#243)").

September 2025

2 Commits • 1 Features

Sep 1, 2025

September 2025 performance summary for Netcracker/qubership-integration-runtime-catalog. Delivered reliability improvements to the chain export workflow and a targeted data model cleanup, enhancing data accuracy, maintainability, and downstream integration stability.

August 2025

1 Commits

Aug 1, 2025

August 2025 monthly summary focusing on reliability improvements and business impact for the Netcracker qubership integration runtime catalog. Delivered a robust enhancement to filtering chains by service by refining query construction to correctly handle distinct results and properly apply HAVING predicates in complex filtering scenarios, significantly improving the reliability of user-facing filters. This work reduced edge-case failures, enhanced data correctness in filter results, and improved user experience for power users and support teams.

July 2025

1 Commits

Jul 1, 2025

Month 2025-07: Focused on stabilizing runtime catalog filtering by fixing a bug that caused undesired aggregation. The change removes an extra groupBy in ChainFilterSpecificationBuilder.buildComplexSpec, ensuring filter results faithfully reflect the specified criteria. This improves data correctness, reliability, and downstream decision-making for catalog queries. Repository: Netcracker/qubership-integration-runtime-catalog; Commit: 02fb3a97dba547a2a6b8f79d4b07b2482e29e678.

Activity

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Quality Metrics

Correctness91.6%
Maintainability86.6%
Architecture86.6%
Performance80.0%
AI Usage26.6%

Skills & Technologies

Programming Languages

HandlebarsJavaYAML

Technical Skills

API DevelopmentBackend DevelopmentCode CleanupData ModelingDatabase Query OptimizationFilter ImplementationJMSJPAJavaJava DevelopmentMessagingQuarkusRefactoringSpringSpring Data JPA

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

Netcracker/qubership-integration-runtime-catalog

Jul 2025 Dec 2025
4 Months active

Languages Used

JavaYAMLHandlebars

Technical Skills

Backend DevelopmentFilter ImplementationJava DevelopmentDatabase Query OptimizationJPAJava

Netcracker/qubership-integration-engine

Jan 2026 Jan 2026
1 Month active

Languages Used

Java

Technical Skills

Javabackend developmentdatabase management